User interface for a biometric scanner



FIG. 1 is a front view of the user interface for the biometric scanner; and,

FIG. 2 is a front view of the user interface for the biometric scanner showing an alternate state where grayscale shading indicates a difference in color contrast or luminance of the shaded portion of the user interface.

The broken lines shown in the drawings represent portions of the user interface for a biometric scanner that form no part of the claimed design. 

CLAIM The ornamental design for a user interface for a biometric scanner, as shown and described. 